The 2022 CT4-V with the 2.7L turbo four is still relatively new, but early patterns show the LSY engine can have serious bottom-end failures under certain conditions, particularly in higher-performance driving or inadequate oil maintenance. Transmission cooling and mount issues also appear disproportionately.
LSY Engine Bottom-End Failure (Connecting Rod Bearings)
Occasional · high severity
Typical onset: 30,000-70,000 mi
Symptoms: metallic knocking from engine bay especially on cold start or under load, oil pressure warning light or low pressure readings, metal shavings in oil filter or drain plug, catastrophic failure can occur suddenly with no warning
Fix: Requires complete engine teardown to replace connecting rod bearings, often accompanied by crankshaft polishing or replacement if bearing material has scored journals. Some engines need full short block replacement if damage is extensive. Expect 18-25 labor hours for bearing replacement, 12-16 for short block swap with core exchange.
Estimated cost: $6,500-12,000
Transmission Oil Cooler Line Leaks
Common · medium severity
Typical onset: 20,000-50,000 mi
Symptoms: transmission fluid puddles under vehicle front-center, low transmission fluid warnings, burnt transmission smell if fluid level drops significantly, trans slipping or harsh shifts when fluid is low
Fix: The 10-speed transmission cooler lines at the radiator tank or quick-connect fittings develop leaks from vibration fatigue. Lines need replacement, not just re-sealing. Also flush and refill trans fluid, inspect for damage from low fluid operation. 2-3 hours labor.
Estimated cost: $450-750
Transmission Mount Deterioration
Occasional · low severity
Typical onset: 40,000-80,000 mi
Symptoms: clunking when shifting from park to drive or reverse, excessive vibration at idle in gear, visible separation or cracking of rubber mount, driveline shudder during acceleration
Fix: Transmission mount fails prematurely, likely due to torque characteristics of the turbo four and transmission combo. Straightforward replacement but requires supporting transmission. 1.5-2 hours labor.
Estimated cost: $300-500
Turbocharger Wastegate Actuator Sticking
Occasional · medium severity
Typical onset: 50,000-90,000 mi
Symptoms: check engine light with boost control codes P0234 or P0299, loss of power especially under hard acceleration, turbo whistle or flutter sounds, limp mode activation
Fix: Electronic wastegate actuator on the twin-scroll turbo develops carbon buildup or mechanical binding. Can often clean and recalibrate, but replacement is common fix. Turbo access is tight, requires removing heat shields and intercooler piping. 3-4 hours labor for actuator replacement.
Estimated cost: $800-1,400
High-Pressure Fuel Pump Failure
Rare · high severity
Typical onset: 40,000-80,000 mi
Symptoms: rough idle and misfires, long crank or no-start conditions, fuel system pressure codes P0087, engine stumbling under acceleration
Fix: Direct injection HPFP on the LSY can fail internally, sending metal debris into fuel system. Requires pump replacement plus injector inspection and fuel system flush. If debris contaminated injectors, all four may need replacement. Pump alone is 2-3 hours, full injector set adds 4-5 hours.
Estimated cost: $1,200-3,500
Piston Ring Land Cracking (Performance Use)
Rare · high severity
Typical onset: 20,000-50,000 mi
Symptoms: excessive oil consumption over 1 quart per 1000 miles, blue smoke from exhaust on startup or acceleration, loss of compression in one or more cylinders, misfires that won't clear with new plugs
Fix: Aggressive driving or tuning can cause piston ring land failures on the LSY, especially cylinder 1 and 4. Requires engine removal and complete rebuild with upgraded pistons. Machine work for cylinder honing often needed. 25-35 hours total including R&R.
Estimated cost: $8,000-14,000
Owner tips
Change oil religiously at 5,000-mile intervals with premium full synthetic—the LSY turbo four is extremely sensitive to oil quality and level
Let the engine warm up before aggressive acceleration, especially in cold weather—bearing failures often trace to cold-start full-throttle runs
Check transmission fluid level and condition every 30,000 miles even though GM says lifetime fill—catch cooler leaks early
If you track or tune the car, budget for upgraded pistons and bearings preventively—the factory bottom end is marginal for sustained high output
I'd buy a gently-used 2022 CT4-V with full service records and conservative driving history, but would avoid any with track use, modifications, or gaps in oil change documentation—the LSY engine has legitimate fragility issues when stressed or under-maintained.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Fitment notes: AGM battery required for start-stop system; located in trunk
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Every control module on the 2020-2026 Cadillac CT4-V — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
⚠️ Power seat memory and heating/ventilation functions; two modules (driver/passenger)
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE · 22V903000
2022-12-08
General Motors, LLC (GM) is recalling certain 2020-2023 Cadillac CT4 and CT5; 2021-2023 Buick Envision; and 2022-2023 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles. The daytime running lights (DRLs) may not deactivate when the headlights are on. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
Consequence: DRLs that do not deactivate as intended may result in a glare, reducing visibility, and increasing the risk of a crash.
Remedy: The body control module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed January 23, 2023. Owners may contact GMC customer service at 1-888-988-7267, Chevrolet customer service at 1-800-222-1020, or Cadillac customer service at 1-800-458-8006. GM's number for this recall is N222386380. This recall expands previous recall number 22V-827.
AIR BAGS:SIDE/WINDOW:CURTAIN · 21V611000
2021-08-05
General Motors, LLC. (GM) is recalling certain 2020-2022 Cadillac CT4 and CT5 vehicles. The roof rail side-curtain air bags may not have been installed correctly, which could result in an improper air bag deployment during a crash.
Consequence: Air bags that do not deploy properly can increase the risk of injury in a crash.
Remedy: Dealers will inspect both left and right-side roof rail air bags and reinstall the air bags, as necessary, free of charge. Owner notification letters were mailed on August 30, 2021. Owners may contact Cadillac customer service at 1-800-458-8006. GM's number for this recall is N212342780.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2022 Cadillac CT4-V 2.7L Turbo I4 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years.